Service manual
1.5.8 OSD Control Factory Default Values: The OSD
controls shall have the following factory default
values:
A. Brightness=100(range 0 – 100)
B. Contrast=50(range 0 – 100)
C. Volume=90(range 0 – 100)
D. Color Temperature=Normal(sRGB)
E. Language= English
F. Horizontal OSD position=50(range 0 – 100)
G. Vertical OSD position=50(range 0 – 100)
H. OSD Timeout=30(range 5– 60)
I. Horizontal size: no default value
J. Fine: no default value
K. Left/Right: no default value
L. Down/up: no default value
1.6 Monitor Modes and Timing Capability:
1.6.1 Format and Timing
The monitor shall synchronize with any vertical
frequency from 56 to 76 Hz, and with any
horizontal frequency from 31 to 83 KHz. If the
input frequency is beyond the specified range, the
monitor shall display a warning screen indicating
that the input frequency is out of range. Under no
circumstances shall any combination of input
signals cause any damage to the monitor.
1.5.7 OSD Function (Abnormal Mode) 1.6.2 Factory Assigned Display Modes: There are 18
factory pre-set frequency video modes. These modes
have a factory pre-set for all characteristics affecting
front-of-screen performance. When the system is
powered-on, previously stored screen parameters for
a pre-defined mode will be recalled if the operating
mode is one of those stored in memory. If the
operating mode is not one of those stored in memory,
the monitor CPU will select the PRESET timing for a
mode that is the next lowest in horizontal scanning
frequency to the mode being currently used. The
screen parameters may be adjusted by the use of the
front bezel controls and then may be saved as a user
defined mode. The monitor shall include all the
preset video timings shown in the following page.
NOTE: (1) 76Hz<=FV: Monitor can display but does
not guarantee.
(2) FH>=85KHz, or Fv>=80Hz: Power Save
(OSD warning invalid mode).
1.6.3 Mode Recognition Pull-in:
The monitor shall recognize preset modes within a
range of +/- 1 KHz whichever is less for horizontal;
and within +/- 1Hz for vertical.
Preset Timing Chart
FH Pixel Rate
(KHz) (MHz) H V
1 102
VGA
720 x 400 70Hz 31.47 28.322 - +
2 103
VGA
640 x 480 60Hz 31.47 25.175 - -
3 182
MAC
640 x 480 67Hz 35 30.24 - -
4 173
VGA
640 x 480 72Hz 37.86 31.5 - -
5 109
VESA
640 x 480 75Hz 37.5 31.5 - -
6 104
VESA
800 x 600 56Hz 35.16 36 - -
7 116
VESA
800 x 600 60Hz 37.88 40 + +
8 117
VESA
800 x 600 72Hz 48.08 50 - -
9 110
VESA
800 x 600 75Hz 46.88 49.5 + +
10 108
MAC
832 x 624 75Hz 49.73 57.28 - -
11 118
VESA
1024 x 768 60Hz 48.36 65 - -
12 157
VESA
1024 x 768 70Hz 56.48 75 - -
13 141
VESA
1024 x 768 75Hz 60.02 78.75 + +
14 203
MAC
1152 x 870 75Hz 68.68 100 - -
15 339 1280 x 720 60Hz 44.772 74.5 - +
16 394 1280 x 800 75Hz 62.63 106.22 - -
17 290
WXGA
1440 x 900 75Hz 70.635 136.75 - +
18 289
WXGA
1440 x 900 60Hz 55.935 106.5 - +
No Chroma Timing Timing Modes, FV(Hz)
Sync Polarity
No VGA Signal Menu The function gives a warning when selected input signal is not
active. When the Monitor determines that the VGA is not input H/V
syncsignalastheOFF
¡B
suspend or standby model, or the V-sync
frequency is under 36.5Hz , the Monitor shall display a message,
No VGA Signal” for 3 seconds and the LED shall be green, to
alert the user that input signal is not active. After the message is
displayed about 3 seconds, the monitor shall go into sleep mode
and the LED shall be Amber. If the monitor is in Sleep mode,
pressing any OSD button shall cause the OSD message to be
displayed for another 3 seconds.
This function gives warning about input resolution or refresh rate
that the monitor cannot display. An input signal which is outside the
normal range of operation defined in Section 3.2 and the input sync
signal frequency for the below condition shall cause the monitor to
display for 3 seconds the Out of Range” message, and the LED
shall be green:
1. V-sync frequency : 36.5Hz<=Fv<=55
2. V-sync frequency : F
V
>=76Hz
3. H-sync frequency : F
H
>=83KHz
Check VGA cable Menu This function gives warning about the VGA cable not connection.
When the Monitor determines that the VGA is not connected, the
Monitor shall display a message, Check VGA Cable” for 3 seconds
andtheLEDshallbegreen, toalerttheuserthatthevideocableis
not be plugged into the CPU or a Monitor signal connector. The
monitor shall use a method of a pull-up resistor on a ground pin to
determine if the video cable is connected to the PC. If the monitor
is in Sleep mode, pressing any OSD button shall cause the OSD
message to be displayed for another 3 seconds.
Out of range Menu
1. Product Specification (continued)
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ACER AL1716W